Insulator-clamp.



W. G. CLARK. INSULATOR CLjAMP. APPLICATION FILED DEC]. 28 1908.

Patented Jan. 18, 1910.

2 SHEETS SHEET 1.

W. G. CLARK.

INSULATOR CLAMP. APPLICATION FILED DEG.28,1908.

946,722; Patented Jan.18,1910.

2 SHEETS SHEET 2.

generally used for this lilit llTED :ltilflflllhii. ()l lillICE.

VJALTER G. oiiann, o

F NEW YORK. N. Y

INSULATOR-CLAMF.

lb (1!! tr/mm it may concern:

.llc it known that I, WALTER G. CLARK, of the city, county, and State ofNew York, have inventetil a new and useful Improvement in.liisulatrm-Clamps, of which the following is a full, clear, and exact:description.

My invention relates to improvements in clamps such as aroused to fastena line wire to an insulator, and the object of my invention is toproduce a clamp of this character which is cheap and simple, which isparticularly easy to apply, and which will hold the wire as securely asis necessary.

My invention is especially intended to produce a. clamp which is fullyas serviceable and cheaper and simpler than clamps purpose.

The invention is also intended to produce a clamp which can be used togreat advantage on insulators around which the wire extends in a curvedline or is extended out: ot' a straight line in any way with relation tothe insulator.

My invention is further intended to produce a simple clamp in which theparts are not only readily adjusted but are unusually secure.

With these ends in view, and with the general object of producing aclamp which is perfectly adapted for holding a line wire to aninsulator, my invention consists of certain features of constructionwhich will be hereinafter fully described and the novelty claimed.

. Reference is to be had to the accompz'inying drawings forming a partotthis speci fication, in which similar reference characters indicatecorresponding parts in all the views.

Figure 1 is a plan View of my improved. clamp as applied to a commonform of insulator. l ig. 2 is a cross section showing the clampindetail. Fig. 3 is a side elevation of an insulator provided with myimproved clamp. Fig. i is a planview of a slightly modified l'orm ot'theclamp. Fig. 5 is a cross section of the structure shown in Fig. 4., andFig. (l is a side elevation thereof.

The clamp comprises two similar and gz enerally sctni-circular bands 10,which are preferably in the form of castings and which arealsopreferably curved on the inner side so that they can'fit in the usualgnoove of the insulator 11. I have shown theclamp in connection with anordinary insulator having.crossingtop grooves 12, so that itSpecification of Letters Patent. Application filed December 29, 1908.

the clamp sulator.

Patented Jan. 18, 1910. Serial No. 463.691.

desired a wire can be placed on the top of the insulator and bound inplaceinthe usual manner. The insulator itself, however, has nothing todo with this invention, as it is applicable to any insulator having a.side groove. The two clamping pieces or straps it) have opposed flanges13 at one side which are united by a suitable bolt 14 and nut 15, bywhich the clamping pieces can be tightened up to any necessary extent.front end the clamping pieces are widened vertically as shown at 1e, onthe front side as shown at 17 so that they will fit nicely against theline wire 18 which is intended to support on the in- Opposite the frontend of the clamping pieces is arranged a tie-plate or coupling, plate 19which spans the joint of the meeting clamping pieces 10, and which is.as wide or wider than the part ltieand has a concave inner side 20forming a seat for the wire 18. The plate and the clamping pieces areheld together by bolts 21 which can be integral with the parts 16 andcan be separately applied, and these extend through the tie plate andare provided with nuts 22 so that by tightening the nuts the tie-plate19 and the clamping pieces can be made to grip the wire 18 to. anydesired extent.

it. will be noticed that there are very few parts to this device, andthat by simply manipulating the nuts 22 and the tie-plate 1!), the wirecan be bound to the clamping pieces as hard as desired, and that asingle bolt ll and nut- 15 serves to tighten the clan'lping pieces toany desired extent: on the insulator. In Figs. 4 to (3 I have shown thesame principle, but slightly modified.

Here instead of having the two clamping pieces arranged and shaped asshown in Figs. 1 and 2, I have a clamping piece 23 which fits the grooveof an insulator and which has the thickened part 24 adapted to form aseat for the wire 18. The tie-plate 19 is used exactly as alreadydescribed, and serves to grip the wire 18 and hold it against thethickened part 24: of the clamping piece 23. The clamping piece 23 hasthickened or flanged ends 95 through which extend the threaded ends 27of the second elain 'ling piece 26, which in this case is in the form ofa strap, and nuts 28 serve to fasten the two clamping pieces 26 and 2-3together and to tighten them to any desired extent upon the insulator.It will also be observed that the At the widened parts IQ of theclamping pieces the body of the insulator clamp, anl t the essentialthing is to have a simple means of attaching these clamping pieces tothe insulator, to have the seat on one part of the body of the insulatorformed by these clamping pieces, and to have the plate arranged as shownto clamp the wire to the insulator body.

Having thus fully described my invention, I claim new and desire tosecure by Letters Patent 1. In an insulator clamp, the combination of abody portion comprised of two members. a clamping bolt connecting thetwo members at oneot' the junctions of said members and adapted to clampsaid body portion upon an insulator, and a'tie plate secured to thatpart of the body portion whi ch on the side of the insulator oppositethe clamping bolt.

2. In an insulator clamp, the combination of a body portion comprised oftwo members. one of said inembzi's having a seat on the face thereof,clan'iping bolts for clamping said body portion to an insulator, and atie plate having fastening means independent of said clamping bolts andadapted to secure it opposite said seat of the body portion and at thesame time clamp a wire between it and said seat.

3. An insulator clamp comprising separable members adapted to be clampedaround an insulator, said members having a widened portion at one of thejunctions of the members making a seat for a line wire, with a tie plateclamped to said widened portion and adapted to clamp a wire on saidseat, and a-clamping bolt independent of said tie plate and adapted toclamp said body members to an insulator.

4. An insulator clamp comprising sepa rable members adapted to beclamped around an insulator and having a widened concave portion at oneof the junctions of the said members, said widened portion forming aseat for a line wire, a bolt projecting forward from each member at thewidened portion, and a tie late secured on said bolts and adapted tocamp a wire be tween itself and the widened portion of the insulatorclamp.

5. An insulator clamp comprising sepa- 'rable members adapted to beclamped around the body of an insulator and having a locking bolt tosecure them at one end, the opposite ends being formed into a seat for aline wire, and a tie-plate detachably secured to said seated ends of thesaid members and arranged to lock said members together and at the sametime secure a wire between itself and the said members.

6. An insulator clamp comprising opposed members adapted to be clampedaround an insulator, the members at one junction hav ing flanges toreceiveia bolt, and having the opposed ends formed into widened seats toreceive a wire, and a tie-plate adjustably clamped to said seats so asto secure a wire between 'itself and the said seats.

WALTER o. CLARK.

'Witnesses \VARREN B. HUTCHINSON, FRANK L. STUBBS.

